# Flip Timer vs Diff Checker

The clearest difference is in-app purchases: Flip Timer at none against Diff Checker's 2. Flip Timer also leads on update cadence (weekly vs fortnightly). Diff Checker's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 16.1). On price and ads there is nothing between them.

Both are free to download. Diff Checker sells 2 in-app purchases, starting at $7.99 per month. Flip Timer asks for nothing beyond the download.

Flip Timer ships an update weekly, Diff Checker fortnightly. The most recent releases landed on August 12, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Flip Timer | Diff Checker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flip-timer-offscreen-focus/id1543547997/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 4 MB | 79 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Daniil Kim](https://appshunter.io/developer/1648048774) | [Edusoft Limited](https://appshunter.io/developer/1836364875) |

## What reviewers say

### Flip Timer

[App page](https://appshunter.io/ios/app/flip-timer-offscreen-focus/id1543547997)

This app uses your phone's proximity sensor to minimize distractions by activating a timer when placed face down. It helps you concentrate on tasks and reminds you to take breaks. Strict mode prevents early interruptions.

**Highlights:** Proximity sensor activation, Blocks notifications and apps, Strict mode for discipline, Flashlight notification, Customizable timer length

**In-app purchases:** none


### Diff Checker

[App page](https://appshunter.io/ios/app/diff-checker-compare-text/id6753902567)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $7.99 | per month |
| Premium Subscription Yearly | $49.99 | per year |


## Frequently asked questions

### Is Flip Timer free?

Flip Timer is free to download, with no in-app purchases.

### Is Diff Checker free?

Diff Checker is free to download, with in-app purchases available.

### Do Flip Timer or Diff Checker have ads?

Neither Flip Timer nor Diff Checker shows ads.

### Which is updated more often, Flip Timer or Diff Checker?

Flip Timer ships an update weekly, and Diff Checker fortnightly. Most recently, Flip Timer was updated on August 12, 2026 and Diff Checker on May 16, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*